t/op/not.t See if not works
t/op/numconvert.t See if accessing fields does not change numeric values
t/op/oct.t See if oct and hex work
-t/op/opt.t Test presence of some op optimisations
t/op/ord.t See if ord works
t/op/or.t See if || works in weird situations
t/op/overload_integer.t See if overload::constant for integer works after "use".
t/op/write.t See if write works (formats work)
t/op/yadayada.t See if ... works
t/perf/opcount.t See if optimised subs have the right op counts
+t/perf/optree.t Test presence of some op optimisations
t/perl.supp Perl valgrind suppressions
t/porting/args_assert.t Check that all PERL_ARGS_ASSERT* macros are used
t/porting/authors.t Check that all authors have been acknowledged